In several sections, both natural in the banks of the Mississippi and its numerous arms, and where artificial canals had been cut, I observed erect stumps of trees, with their roots attached, buried in strata at different heights, one over the other.
在密西西比河两岸及其众多支流的天然地带和人工运河开凿的地方，我看到了几段笔直的树桩，它们的根连在一起，埋在不同高度的地层中，一个接一个。
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